"The Medway Handyman" wrote:
My local glaziers can fit cat flaps into double glazed units on site.
They dismantle the unit, cut the holes & reasemble it. Don't spose its
cheap though.


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk

That can be done on glass that has not been toughened but a bottom glass
door panel will be toughened glass so will shatter if any attempt is made to
cut it. The two options are to either get the DG company to make a sealed
unit with the hole cut out for the cat flap then get the glass toughened, or
have a upvc panel cut to size with an aperture for the cat flap.